I downloaded the app through my company portal and immediately upon opening the app I received the message "The SAP Concur Mobile app was not able to detect a default browser on this device. Please make sure to seta a default browser in order to use the app." I have checked on my mobile device and a default browser is selected. Not only is one selected, there is only one browser available on my device, so the default is the only browser available. The only option is to click "ok" with this notification and the app closes. I cannot get past this point. It wil not allow me to log in.  How do I resolve this issue?